常見例句雙語例句It is firstly def ined as minus logarithm of PH indicator.首先定義爲(wèi)氫離子濃度負(fù)對數(shù)。A method of abstracting plant pigment as alternate indicator was described, and the change of colour at different pH ranges in various plant pigmentes was measured.本文綜述了黑色素的理化性質(zhì)和生理功能，以及林木植物黑色素的分離制取方法，竝就黑色素的研究和應(yīng)用進(jìn)行了展望。Taking alcoholicity as the indicator, the effects of initial sugar content, initial pH, inoculum size and temperature on the fermentation of the wine were investigated.以酒精度爲(wèi)指標(biāo)，研究了初始糖度、初始酸度、接種量和發(fā)酵溫度對涼薯果酒發(fā)酵的影響；www.bimag.com.cn 返回 ph indicator ph